Atlantic Theater Company's world premiere musical, 10 Million Miles, featuring music and lyrics by singer-songwriter Patty Griffin and book by Keith Bunin, will play two weeks longer than originally announced.

The musical is now in previews toward a June 14 opening. The extension will take the Michael Mayer-directed production to July 15 (rather than July 1) at the Linda Gross Theater, Atlantic's home on West 20th Street.

According to ATC, "10 Million Miles tells the story of Duane (Morrison) and Molly's (Molloy) road trip in an old pick-up truck from the southern tip of Florida to Upstate New York, with many detours along the way. With a book by Keith Bunin and songs by Patty Griffin, the world premiere of this new musical explores the pursuit of love and family, and the geography of the American dream."

Previews began May 11. Tickets are $65 and are available by calling Ticket Central at (212) 279-4200 or by visiting ticketcentral.com.